System for controlling separating gravity in dense-media cyclone

Details System for controlling separating gravity in dense-media cyclone System for controlling separating gravity in dense-media cyclone

1982-07-28

1984-09-11

Lutter, Frank W.

Classifying, separating, and assorting solids

Miscellaneous

2091725, B03B 1300, B03B 534

Patent

active

044709013

ABSTRACT:
This invention is directed to a method of beneficiating a material, such as coal, by subjecting the coal to be treated to the action of a dense-media cyclone, where the dense-media thereof is a slurry of magnetite in water. More particularly, the present invention relates to a method to control the separating gravity of said cyclone within predetermined limits by (1) measuring the flow rate and percent magnetite in the flow discharging from the cyclone, and (2) based on pre-calibrated data, adjusting the feed flow and content, i.e. magnetite and/or water, into said cyclone, thereby controlling said separating gravity within predetermined limits.

REFERENCES:
patent: 3687284 (1972-08-01), Leeman et al.
patent: 4028228 (1977-06-01), Ferris et al.
patent: 4276119 (1981-06-01), Karnis et al.
Chemical Engineers' Handbook, R. M. Perry, C. H. Chilton, 5th Edition, McGraw-Hill, New York, NY, pp. 22-3,4; 22.12-22.21.

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